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Atrial Natiuretic Peptide

When blood volume and blood pressure increase, the stretched atria release Atrial Natiuretic Peptide (ANP), a cardiac hormone. ANP promotes natriurisis by shutting down the renin-angiotensin-aldosterone system and causing vasodilation. As the blood vessels expand, urine excretion of sodium and water increases, stabilizing blood volume and blood pressure.

Animation: Increased blood volume or blood pressure stimulates the release of ANP

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